[Offloading] Support InPlacePodVerticalScaling feature (K8s >= 1.33) #3129
Description
Describe the problem you are having (if any)
The InPlacePodVerticalScaling feature (enabled by default starting from Kubernetes 1.33) allows for changing a pod's resource requests and limits without restarting the pod. This is a significant improvement for any workload sensitive to restarts, as it minimizes disruption.
Currently, Liqo does not support this feature. If a user attempts to resize an offloaded pod, the resource update is not propagated to the remote cluster. This can lead to inconsistencies between the local and remote pod, preventing users from leveraging this new feature.
Describe the solution you would like
When users attempt to resize offloaded pods:
- The remote ShadowPod should be updated with the new values for the fields that are allowed to change
- The remote shadowpod controller should update the remote pod accordingly
- The remote pod status should be reflected back to the local pod correctly
Describe the user value of this feature
Offloaded pods' resources will be resized without a restart, minimizing disruption and making the liqo virtual node UX more similar to upstream Kubernetes.
Describe your proposed solution
No response
Do you volunteer to implement this feature?
- I want to implement this feature
Code of Conduct
- I agree to follow this project's Code of Conduct